Machine for cutting shingles.



e. R. WYMANi MACHINE FOR cunmq SHINGL ES. APPLICATION FILED JAN. 19. 19!]. 1

Patenmd Apr; 23, 1918.,

GEORGE E. WYMAN, F WALPOLE, MASSACHUSETTS, ASSIGNOR T0 l 01F WALPOLE, MASSACHUSETTS.

MACHINE FOR CUTTING- SHINGLJES.

eeann.

Specificatipn of Letters Patent.

Patented Apr. 23, T91.

Application filed January-19, 1917. Serial No. 143,802.

To all whom it may concern Be it known that I, GEORGE R- l/VYMAN, a citizen of the United States, residing at Walpole, in the county of Norfolk and State of Massachusetts, have invented a certain new and useful Improvement in Machines for Cutting'Shingles, of which the following is a specification.

My present invention pertains to an improved machine for cutting shingles, and more particularly so called fiber shingles formed from paper or other fibrous stock, and usually treated with water-repellent and fireproofing substances or mixtures, and with a weather-resistant surface. Ordinarily the stock from which such shin les are cut is in web form, which web initial y is passed through the necessary baths, and coated with grit or sand sub'ected to pressure.

The web of material thus produced is more or less'dificult to cut, and particularly so where portions are died out or removed, as for instance where. the shingle is a so-called twin shingle, which has a notch extending inwardly from one -ed e, and a half-notch adjacent each end, with a cut or line of severance, between adjacent shingles, the line or out being coincident with the notch which forms the two halfnotches at the adj acent. shingle ends.

The ob ect of the present invention is. to

groduce a machine to efl'ect this cutting and ieing out operation in which the strain on the machine is reduced to a minimum roll and. die.

Referrin to Figs. 1 and 2, 1O denotes the shin le bo y, provided with a centrally-dispose notch 11, extending inwardly from one edge thereof. At each end, and extending inhfrorn the same edge as the notch 11, 11s a. 1: 1

so much of the manotch, desiated by 12, which half-notches, as will be seen upon reference to Fig. 2, are originally formed as a co mplete notch, from the base or curved 1nner end of which extends a straight line 3 and 4, thence between upper and lower feed rolls-16 and 17, and from these to and between the die roll 18 and the cylindrical die 19. Said die is formed (or in other words, the cutting elements thereon are so positioned and rotated) that a minimum number of cutters, or dies, are acting in conjunction with the die roll 18 at one and the same time.

Thus upon reference to Figs. 5 and 3 and considering the latter as a projection or plan of the-die, it will be noted that no two dies or cutters are in longitudinal allnement, the purely notchin dies or cutters bein designated in Fig. 5 y 11 and the com ined notching dies and end or transverse cutters by 12 and 13 respectively. It will also be noted that the cutters 13 extend in opposite directions to each side of the center of the roll, and that the various cutters and dies are so positioned or spaced that each strip.

as it passes from the slitters 15 will be cut and formed into shingles of the twin type without any" waste whatsoever. Tn other words, each circumferential series of cutters is so spaced that as the web passes between the, die roll and cylindrical roll it will be cut into the predetermined shingle-length and each shingle will be notched, as above set forth.

By arranging the cutters and dies in the manner s ecified the shingles can be produced wit a minimum of strain on the machine, and with an increase in the life of the cutters.

Having thus described my invention, what T im is:

1. A cylindrical die, having slitting dies and cuttlngout dies both arranged longitudinally of the body in series and extending circumferentially of the body, the dies being out of longitudinal alinement with each other.

2. A cylinical die having slitting dies and cutting dies extending longitudinally alon the outer surface of the body and arrange in series circumi'iarentially of the body, the dies of each circumferential series being out of alinement with those of the other series. 3. A cylindrical die having a plurality of series of circumferentially arranged, combined slitting and dieingeout cutters extending longitudinally of the die, the cutters being arranged in alternation to produce a notch and a combined notch and slit, the cutters of each circumferential series being out of alinement with those ofthe other series.

4. A cylindrical die having a plurality of tudinally-extending, substantially U-shaped notching cutters, the cutters of each series being in circumferential alinement, and the cutters of each and all of the series being out of longitudinal alinement with those of the other series; and a straight slitting cutter extending from the bottom of each alternate notching cutter and terminating in a plane passing through the outer terminals of the notching cutters toward which they extend,

In testimony whereof I have name tothis specification.

GEORGE R. WYMAN.

signed my 

